I finally received the confirmation letter yesterday. It turned out the department pushed back the hiring day for 2 weeks.A simple "thank you for the offer" can go a long way. Explain that you accepted a job offer, that the acceptance was in writing, and say who sent you the offer. The answer to your question, regarding whether you can back out of the Offer Letter, is likely "Yes. More categories coming soon! These basic sample offer letters consist of "core" data that should be included in an offer letter. I am delighted to accept the job offer you recently made to me. I look forward to starting work on . Applications for most jobs in Los Angeles County are accepted through our online Job Application System.